Fix warnings
Calculate adjacency for each Cell
Use vectors instead of lists for checking adjacency
Reorded isAdjacent function slightly
Randomly place mines
Fix misnamed variable
Use two ints instead of int tuple for position
Cleaned up code for adding mines and added width / height to board record
Moved isAdjacent to Cell module
Merge branch 'master' into gui

Conflicts:
	Minesweeper.cabal
	src/Main.hs